Features: - Battery Type: Li-ion - Voltage: 11.1V - Capacity: 4400mAh Compatible Part Numbers: 70-NXM1B2200Z, 90-NYX1B1000Y, A31-B53, A31-K52, A32-K52, A32-N82, A41-K52, A42-K52, A42-N82, K52L681 Fit Model Numbers: ASUS: - ASUS A40J Series ASUS A40J ASUS A40JA - ASUS A40JE ASUS A40JP - ASUS A42 Series ASUS A42 ASUS A42D - ASUS A42JK ASUS A42JR ASUS A42JV - ASUS A52 Series ASUS A52 ASUS A52F - ASUS A52J ASUS A52JB ASUS A52JC - ASUS A52JK ASUS A52JR - ASUS A62 Series ASUS A62 - ASUS B53J ASUS B53JC - ASUS F85 Series ASUS F86 Series - ASUS K42 Series ASUS K42 ASUS K42D ASUS K42N ASUS K52N ASUS N82JV ASUS P52J ASUS P52JC ASUS P62 Series ASUS P82 Series ASUS PRO5I Series ASUS X42 Series ASUS X42 ASUS X42D ASUS X52JR ASUS X52N ASUS X5I Series ASUS X67 Series ASUS X8C Series What's in the box Laptop Battery